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The vertical painting systems for aluminium profiles using the OFB4 disk represent the most advanced evolution of Trasmetal electrostatic technology.
It is based on and further improves the general architecture of the OFB3, with three high-voltage generators, each of which manages a series of 9 electrodes.

VERTICAL PAINTING SYSTEMS FOR ALUMINIUM PROFILES WITH OFB DISK
OFB4 is equipped with two separate air circuits, one for feeding the fluidised bed, while the other is an auxiliary circuit for continuous electrode cleansing and for supporting air/ powder mixture emission.

The most important innovation, subject of a new patent request dated 2005, consists of the new solution adopted for the ionisation systems which, thanks to the particular geometry of the electrodes, allows the homogenization and maximising of the powder’s charge effect an instant before it is sent through the slots of the disk.
An extremely high electrostatic efficiency is reached, maximising the consistency of the layer already obtained with the previous generation of disks, while also improving extension and penetration.
What is more, the most important practical result of the new OFB4 technology consists of the possibility of the new disk to use not only standard RAL powders (already achieved with the OFB3), but also special powders (metallised, veined, embossed, marbled, etc) without the need for selected granulometry, with advantages (both for powder producers as well as users) for small lots of colour.

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